Numerical study on the X80 UOE pipe forming process
Numerical study on the X80 UOE pipe forming process
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DOI：
10.1016/j.jmatprotec.2014.08.013
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发表时间：
2015-01-01
影响因子：
6.3
通讯作者：
Peng, Yinghong
中科院分区：
文献类型：
--
作者：
Ren, Qiang;Zou, Tianxia;Peng, Yinghong
UOE工艺是生产油气管道用大口径埋弧焊管的有效途径。UOE工艺包括卷曲、U形成形、O形成形、连接、焊接和扩张的连续工序。本文建立了X80高强钢管UOE成形过程的二维有限元模型，并对其成形过程进行了数值模拟。采用随动硬化模型对X80钢的包辛格效应进行了有限元分析。通过对板料在加载-卸载-反向加载条件下的复杂变形和回弹行为的分析，揭示了O形开缝的形成机理。通过计算结果与实际测量结果的对比，验证了所建模型的有效性。此外，数值研究了工艺参数、摩擦系数和材料性能对开缝和椭圆度的影响。(c)2014爱思唯尔有限公司版权所有。
The UOE process is an effective approach for manufacturing large-diameter submerged-arc welding pipes used in oil and gas pipelines. A UOE process comprises the successive procedures of crimping, U-forming, O-forming, joining, welding, and expanding. In this study, a two-dimensional finite element model of UOE forming process is established and all the forming stages of an X80 high strength steel pipe are numerically studied. A kinematic hardening model is incorporated in FEM to describe the Bauschinger effect of X80 steel. The formation mechanism of O-forming open-seam is unveiled based on analysis of the complex deformation and springback behaviors of plate under loading-unloading-reverse loading condition. The validity of the model established is demonstrated by comparing the calculated result and practical measurement. Furthermore, the influence of processing parameters, friction coefficient and material properties on open-seam and ovality are numerically investigated. (c) 2014 Elsevier B.V. All rights reserved.